属性名称
描述
android:columnWidth
设置列的宽度。
android:gravity
设置此组件中的内容在组件中的位置。可选的值有：top、bottom、left、right、center_vertical、 fill_vertical、center_horizontal、fill_horizontal、center、fill、 clip_vertical可以多选，用 | 分开。
android:horizontalSpacing
两列之间的间距。
android:numColumns
设置列数。
android:stretchMode
缩放模式。
android:verticalSpacing
两行之间的间距。
案例一：
1.定义一个布局文件：gridview.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<GridView
android:id="@+id/gridview_main"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:numColumns="auto_fit"
android:verticalSpacing="1dp"
android:horizontalSpacing="1dp"
android:columnWidth="90dp"
android:stretchMode="columnWidth"
android:gravity="center"
>
</GridView>
</LinearLayout>
android:numColumns="auto_fit"--列数设置为自动；
android:columnWidth="90dp"--每列的列宽，也就是item的宽度
android:verticalSpacing="1dp"--两行之间的边距
android:horizontalSpacing="1dp"--两列之间的边距
android:stretchMode="columnWidth"--缩放与列宽大小同步
2。接下来定义gridview_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<ImageView
android:id="@+id/gridview_imageview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
</ImageView>
<TextView
android:id="@+id/gridview_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView01"
android:gravity="center"
/>
</LinearLayout>
3.最后定义Java的源代码了，GridViewDemo.java
package com.test;
import java.util.ArrayList;
import java.util.HashMap;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.SimpleAdapter;
public class GridViewDemo extends Activity {
int [] image={R.drawable.android,R.drawable.blackberry,R.drawable.windowshone,R.drawable.windowshone,R.drawable.blackberry,R.drawable.android,R.drawable.windowshone,R.drawable.ios,R.drawable.blackberry};
private GridView gridView;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.gridview_main);
gridView = (GridView)findViewById(R.id.gridview_main);
//生成动态数组，并且转入数据
ArrayList<HashMap<String, Object>>list=new ArrayList<HashMap<String,Object>>();
for(int i=0;i<9;i++)
{
HashMap<String, Object>map = new HashMap<String, Object>();
map.put("ItemImage", image[i]);//添加图像资源的ID
map.put("itemtext","Amigos_pop-"+String.valueOf(i));
list.add(map);
}
//生成适配器的ImageItem <====> 动态数组的元素，两者一一对应
SimpleAdapteradapter=new SimpleAdapter(this, //数据来源
list,R.layout.gridview_item,//XML实现
new String[]{"ItemImage","itemtext"}, //动态数组与ImageItem对应的子项
new int[]{R.id.gridview_imageview,R.id.gridview_textview}////ImageItem的XML文件里面的一个ImageView,两个TextView ID
);
//添加并且显示
gridView.setAdapter(adapter);
//添加消息处理
gridView.setOnItemClickListener(clickListener);
}
//当AdapterView被单击(触摸屏或者键盘)，则返回的Item单击事件
privateOnItemClickListenerclickListener=new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0,//The AdapterView where the click happened
View arg1,//The view within the AdapterView that was clicked
int arg2,//The position of the view in the adapter
long arg3//The row id of the item that was clicked
)
{
HashMap<String, Object>item=(HashMap<String, Object>)arg0.getItemAtPosition(arg2);
setTitle((String)item.get("itemtext"));
}
};
}
4：执行效果：
===============================================================================
案例二：同样的效果：
布局文件使用上面一样的：
定义一个ImageAdapter类，此类继承BaseAdapter如下：
package com.test;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
public class GridViewAdapter extends BaseAdapter {
//定义Context
private ContextmContext;
//定义整形数组 （图片资源）
privateint []mimages=
{
R.drawable.android,R.drawable.blackberry,R.drawable.windowshone,
R.drawable.windowshone,R.drawable.blackberry,R.drawable.android,
R.drawable.windowshone,R.drawable.ios,R.drawable.blackberry
};
public GridViewAdapter(Contextc)
{
mContext=c;
}
//获取图片的个数
@Override
public int getCount() {
// TODO Auto-generated method stub
return mimages.length;
}
// 获取图片在库中的位置
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
//获取图片ID
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
ImageView mimageView;
if(convertView==null)
{
//给Imageview设置资源
mimageView = new ImageView(mContext);
//设置布局图片120*120显示
mimageView.setLayoutParams(new GridView.LayoutParams(85, 85));
mimageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
mimageView.setPadding(8, 8, 8, 8);
}else
{
mimageView=(ImageView) convertView;
}
mimageView.setImageResource(mimages[position]);
return mimageView;
}
}
package com.test;
import java.util.ArrayList;
import java.util.HashMap;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
public class GridViewDemo_2 extends Activity {
private GridViewgridView;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.gridview_main);
gridView = (GridView)findViewById(R.id.gridview_main);
gridView.setAdapter(new GridViewAdapter(this));//调用GridViewAdapter
gridView.setOnItemClickListener(clickListener);
}
privateOnItemClickListenerclickListener =new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position,
long id) {
Toast.makeText(GridViewDemo_2.this, ""+position,Toast.LENGTH_SHORT).show();//显示信息;
}
};
}
效果：
